One of the most important and costliest parts of the TBM is probably the main bearing. Therefore, it is imperative that this piece of machinery be kept in good condition by ensuring that it is properly sealed and well lubricated.

Main Bearing Sealant Greases
Experience has shown that most failures of TBM main bearings are related to a loss of lubricant or to the entire of contaminants such as water, mud and dust from outside. Our MBG group protects the main bearing by preventing it from contact with such contaminants. Produced from highest raw materials and under the stringent standards, this product stands for quality and is Merkel certified. 

Main Bearing Lubrication Greases
Our extreme pressure greases for TBM main bearings are packed with highly important features. They offer excellent mechanical stability in low and fast rotation speeds, heavy load carrying capacity and corrosion protection, strong resistance to washout and very good temperature stability. These greases are available in biogradeable and fire-resistance forms and come in several grades.